# How do you find the domain and range of #f(x)= sqrt(x^4-16x^2)#?

##### 1 Answer

Sep 25, 2015

#### Answer:

Domain

Range

#### Explanation:

Write

For f(x) to be real , either

This implies that either both x-4 and x+4 should be

which means either

Hence domain would be

For range it is clear that for x=0, y=0 and for